Start using nspr-config to set NSPR_CFLAGS & NSPR_LIBS.
Start placing nspr headers under $(DIST)/include/nspr to match a system installed NSPR.
Bug #73919r=blizzard@mozilla.org
git-svn-id: svn://10.0.0.236/trunk@91626 18797224-902f-48f8-a5cc-f745e15eee43